Ah Memories
I worked on Ferranti Argus years ago too.
My abiding memory is of my team leader flicking switches from memory to enter the program that allowed the computer to boot from disk instead of paper tape.
I also witnessed my first head crash. Because of the size of the Winchesters, it was a memorable event. The room was filled with the sound of a buzzsaw and the same team lead leapt up like a startled rabbit and hit the big red button. Too late of course, and we mounted the disk platter, with the silver ring inscribed in the middle, on the wall... alongside the others. It wasn't a rare event I learned!
Being very junior, my task was to rewind all the paper tapes. One day, I looked down to discover that I'd carelessly rested my finger on the edge of the paper tape and several yards of tape were bright red instead of pale green. My boss wasn't greatly sympathetic when I went to tell him with blood dripping from my finger. He ignored the blood, and complained that I'd ruined that tape and it would have to be re-generated.